Horizontal.



I. P. GIIUEIZIIIEI'I.

HORIZONTAL ENG.INE.-

APPLICATION FILED APII. 1. 191e.

1,246,262. i Patented N0v.13,1917.

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UNITEDSTATES were FRITZ PAUL GRUETZNER, or New nocnnLLn, Nnwronir, A. ss-IGNOR To DE LA V'ERGNE. MAOHLNE COMPANY.' or NEWYQRK, Y., .e @Onrona'roN OF NEW YORK.

HORIZONTAL ENGINE.

specification df' Letters raient.

' PatentedNevuaieiv.

iippnaaon filed apra r, 191e. serial No. 89,552.

To all whom. t may concern:

Be it known that'I, FRITZPAUL Gnomz- Nnn, a citizen of Germany, and a resident of New Rochelle, in"tlie countyfof Testchester and State of New York, have'instand the thrust of the piston and whereby other advantages are attained as hereinafter made apparent.

Figure l illustrates the invention in simple forni;

Fig. Q illustrates for'comparison, the type of horizontal engine crankshaft bearing which is most common inthe art, and

Fig. 3 is a modification illustrating the scope of the invention.

Referring l'irst'to Fig. 2, the engineiframe there shown may be understood to be that'y of an internal combustion engine to which class my invention specially pertains. The crankshaft l thereof is journaled on two semi-cylindrical bearings or so-called brasses, of which the lower brass 2 is bedded firmly in the bottom of the crank-shaft notch in the engine frame and the upper brass, 3, is clamped against the shaft and toward the lower one, by a cap 4 and its bolts or nuts 5. Under the working thrust of the piston, which is approximately horizontal, and the weight of the crank-shaft and flywheel, which is vertical, the wear of the bearing takes place in a resultant, obliquely downward direction as indicated roughly by the dotted line, and for this reason it is customary to dispose the proximate faces of the cap and frame, as well as of the brasses, in a plane which is perpendicular to said line so that the bolts 5 will be parallel therewith and the upper brass can thus be advanced toward the other in the direction of the wear and as the wear takes place. This common construction has the objection that a weak point is produced on the frame at the crank-shaft notch or immediately in front of it due to the diminished vertical dimensions caused by the notch itself or made necessary in order vto accommodate the inclination of the journal cap in the position stated, and fracture at this point is not an uncommon occurrence andalways entails expens'ive consequences. f Lateral increase of the frame thickness is not practicable onaccount'of clearance requirements andfor =obvious reasons. Y

My invention avoids the objection noted by mounting the bearings orbrasses in a Ynotch in the frame which has its opening or entrance faced upwardly and above the level of shaft axisand in such inclination to the line of wear as not to involve appreciable encroachment upon the metallic cross-section of the fraine'intervening between the shaft and cylinder.V In` Fig. l the'notch is` a substantially Ushaped "slot with vertical 'side walls terminating in heavy upstanding lugs 6` and the journal Cap has terminal hook-shaped flanges 7 embracing these'lugs v and adapted to tie the opposite walls of the notch together so that the reduced section immediately below the 'shaft is thereby adequately reinforced. rIhe lower br se 8 of any suitable material) is seated'in'thenotch with its edges in a plane or planes perpendicular to the line of wear and the'upper brass 9, fitted thereon, has a slabbed face l0 also perpendicular to the line .of wear and adapted to be engaged by the wedge surface of a part l1 which projects from the cap into the notch. The cap bolts threaded into the lugs 6, the same being parallel with the outer faces of the lugs, serve to tighten the cap upon the notch in a direction which is downward and also oblique or transverse to the line of wear.k Through the action of the wedge surface each tightening advances the upper brass toward the other in the direction of the line of wear. The upper brass isdesirably guided in such movement otherwise than by engagement with the shaft as by rabbeting the meeting edges of both brasses as indicated at 12 but it may be correlated to the lower brass .or other parts in any suitable way so that the tightening of the bolts will advance' it properly as the wear takes place. K

Fig. 3 illustrates the transposition of the wedge surface to the side wall of the notch, the engagement of the upper brass with the cap, in this case, being between the top surface of the brass which is parallel with the cap. The properadvance of the brass is determined by the inclination of the wedge surface 13 upon which the brass is guided by the engagement therewith of its projecting part or parts 14:, while otherwise the structure and operation is the same as already described. Between the crank-shaft and the engine cylinder there is no point of weakened section and the weakness incidental to the depth of the notch is coinpensated by the tensile strength of the cap which of course can be easily made of any necessary cross-section.

It will thus be apparent to those skilled in the art that the essential features of the invention comprise the upper brass advanced in the line of wear by the tightening of the cap in a downward directiomoblique or transverse to such line, andso as to avoid or compensate the weakening of that part of the frame which constitutes the pillow for the bearing, and that in other respects, including the oilingfacilities, the parts may be constructed according to preference. The vertical apertures in the caps and brasses shown in the drawing are for lubrication but any lubricating system' can obviously be applied.

The invention is claimed as follows.:

l. rlhe combination of a horizontal engine frame having a crank-shaft notch with its entrancek faced vertically upward anddisposed above the crank-shaft therein, a. journal cap covering such notch and adapted to be tightened thereon in a direction oblique Or transverse to the line of wear of the bearframe having a crank-shaft notch with its entrance faced in a direction oblique to the line of wear of the crank-shaft bearings and its u er marvins formed b uestandino' Y C D parts, a ournal cap clasping said parus, and thereby tying the walls of the margintoget-her and adapted to be tightened on said notch in a direction oblique to said linek of wear, and a journal brass advanced by the cap in the direction of said wear.

3. The combination of a horizontal engine frame having a crank-shaft notch with its entrance faced in an upward direction, oblique to the line of wear of the crank-shaft bearing, a journal cap having terminal flanges uniting the opposite walls of said notch and adapted to be tightened thereon in a direction oblique to the said line of wear anda journal brass engaged by a wedge surface to advance in the direction of the line of wear as thecap is tightened. l

In testimony whereof7 I have signed this specification.

FRITZ PAUL GRUETZNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

Washington, D. G. 

